Alan Woodward created LUCENE-4479:
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Summary: TokenSources.getTokenStream() doesn't return correctly
for termvectors with positions but no offsets
Key: LUCENE-4479
URL: https://issues.apache.org/jira/browse/LUCENE-4479
Project: Lucene - Core
Issue Type: Bug
Components: modules/highlighter
Affects Versions: 4.0
Reporter: Alan Woodward
Priority: Minor
The javadocs for TokenSources.getTokenStream(Terms, boolean) state:
"Low level api. Returns a token stream or null if no offset info available
in index. This can be used to feed the highlighter with a pre-parsed token
stream"
However, if the Terms instance passed in has positions but no offsets stored, a
TokenStream is incorrectly returned, rather than null.
This has the effect of incorrectly highlighting fields with term vectors and
positions, but no offsets. All highlighting markup is prepended to the
beginning of the field.
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